Messages in this thread | | | Subject | Re: [PATCH 45/79] [PATCH] fix apic acking of irqs | From | Andi Kleen <> | Date | 25 Mar 2008 13:40:41 +0100 |
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"Maciej W. Rozycki" <macro@linux-mips.org> writes: > > Please note that ESR may hold some leftover state from whatever happened > before Linux has taken control, so it is reasonable and I think actually > recommended by Intel (FWIW) to clear the register before enabling the > error interrupt. For how to clear the ESR properly, please see > setup_local_APIC() -- subtle differences and errata in various APIC > implementations have made it more complicated than necessary, sigh...
iirc a lot of the ESR weirdness was on NUMAQ only, which is down to one of two last machines running Linux which will hopefully die soon ...
-Andi
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